Loco motive-furnace



(No Model.)

T.. A. BUGKLAND.

LOOOMOTIVE FURNAGE.

No. 334,689, Patented Jan. 19, 1886.

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THOMAS A. BUGKLAND, OF ST. LOUIS, MISSOURI.

LOCOM'OTlVE-FURNACE.

EPECIFICATION forming part of Letters Patent No. 334,689, dated January 19, 1886.

Application filed September 19, 1884. Serial No. 143,494. (No model.)

of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification, in which- Figure 1 is a longitudinal vertical section of a locomotive having the improvement, and

Fig. 2a vertical cross-section on the line 2 2 of Fig. 1.

The same letters of reference denote the same parts.

This invention is an improvement in that class of devices which are employed withinthe fire-box of a locomotive to promote the combustion-such, for instance, as shown in Letters Patent No. 147,744, granted to me February 24, 1874.

The improvement in question consists in the special shape and relative arrangement of the parts used to form the combustion-chamber at the farther end of the firebox-namely, the bridge which forms the bottom of the combustionchamber and the diaphragm which incloses the upper portion thereof.

A represents a locomotive of the ordinary type, having the fire-box B, the fire-door G, the grate D, and the fines E, constructed and arranged in the customary manner.

F represents what may be termed a bridge. It extends across the farther end, I), of the firebox.just below the llues E. The bridge is preferably slightly arched, as shown in Fig. 2., At the top of the fire-box, and above the bridge, is a diaphragm, G, extending from one side of the fire-box to the other side thereof, and from the top of the fire-box downward toward the endf of the bridge, but not down to the level of the bridge, the diaphragm stopping short of that level, for it is my design to have the diaphragm at its lower end, 9, to come even vertically with the endf of the bridge, so as to form the throat or outlet 45 M, between the ends gf ofthe diaphragm and the bridge, respectively, as shown in the drawings, although the bridge may be extended upward past the lower end of the diaphragm.

The bridge F and the diaphragm G are v made of fire-clay or other incombustible ma terial. The diaphragm is supported in place by plugs H H, fixed in the walls of the firebox, and the bridge is similarly supported and held in place by plugs I I. I

The bridge F and the diaphragm G, together with a portion of the walls of the firebox, form the combustion-chamber J.

K K represent perforations in the wall I) of the fire-box. These perforations admit the outer air into the fire-box. The air passes underneath the bridge to the throat or entrance of the combustionchamber, into which it enters in combination with the products of 6= combustion from the tire.

I claim- The combination, in the fire-box of a locomotive, of the bridge F and the diaphragm G, said bridge extending across the farther end of the firebox, just below the dues E, and said diaphragm extending across the fire-box laterally, and from the farther upper corner of the fire-box downward and forward toward the fire-door end of the firebox, but not down to the level ofthe bridge, substantially as de scribed.

THOMAS A. BUCKLAND.

YVitnesses:

J. W. HOKE, O. D. MoonY. 

